On the help pages it says "Seafire IIC". Seafire IIC used the c wing with two cannon bays and the outer bay capped off. But if you look at the 3D model it's got a B wing with one cannon bay. This makes it a Seafire IB.
Also the serial is W3238, which is the serial for Spitfire Vb PR-B, the London Butcher, which is the Spitfire Vb in the AH planeset!
Additionally it should be able to carry a 30 gallon drop tank on the centerline.
And like all the CV planes it is missing the arrester gear.
For a complete list of Seafire serials, details on the drop tank installation, and details on the arrester gear installation. Please check "Spitfire: The History" by Eric B. Morgan and Edward Shacklady, ISBN 0-946219-48-6.
This book also has information that would help fix the armament issues on the Spitfire Mk. IX.